Pump



March. 14, 1950 c. A. ERICKSON 2,500,31`0

PUMP

Filed Sept. 2l, 1946 4 l f .7 y, 2. fl

17 14 25 Z' 12 l 5 l 1 310 73 l 23 24 27 I W8 22 27 f 21 2 0 46 16 7 3 47 3129 5 g-o 33 23 o 4 8 38 50 a2 2 39 ff `r49 40 I 42 6%7295 z'C/son Patented Mar. 14, 1950 PUMP Charles A.

Erickson, Dearborn, Mich., assgnor, by mesne assignments, to

F. L. Jacobs Co., De-

troit, Mich., a corporation of Michigan Application September 21, 1946, Serial No. 698,473 Claims. (Cl. 103-228) capacity for a small size.

Another object is to provide a suitable valve arrangement.

Another object is to provide valve seats and an effective means for assembling and retaining them in place.

Other objects will appear from time to time throughout Figure 1 is an elevation of the pump with parts broken away and parts in section;

Figure 2 is a, section taken generally at line 2-2 of Figure 1 and illustrating generally the internal construction of the pump.

are indicated by like characters The housing section shown which is If desired, a lter of any suitable sort may be positioned within the space 5, but the invention 1s not limited to the inclusion of such a with a raised portion I4 may be seated.

I3 upon which a Valve disc The disc is normally held in rial, ber material or metal.

The spring I5 is seated at one end upon a shoulder I6 which is formed member I3. The exteriorly threaded,

valve seat member 2 I.

The ange 20 or some other part of the memoutlet valve assemblies.

The lower housing section 2 is shaped to provide a shoulder 28 3i may be positioned on either side material 3l, of the diaphragm.

The housing member 2 may be provided with 32 within which one or more springs 33 are seated. These springs may all be of one size or may be of different sizes, and they may be formed of wire or material of different thicknesses. The housing` section 2 isk shaped toffprovide a chamber 34 and,V end 35 about which may be positioned a flange 3S perforated, as at 31, to receive bolts or other at-A taching members,

An operating lever 38 projects into the chamber 34. At one end the member-3Bfhas a. cup-likev part 39 which may carry within member 40. any source, fits into the cushioning member All.

cup 3,9. and against the- This push rod is reciprocated to cause movement of the lever. At its'ope posite end the lever is provided with a rounded portion -A2about which a cushion member 43; may be positioned. The portion 42, 43 of therlever` 38 is received in a loop lili which may be of rigid, materia-l.

The loop is secured to the diaphragm by a rivet 45, or otherwise. A relatively rigid member 133 maybe secured by the rivet on the upper lface of the diaphragm 30 and a second relatively'rigid member M is secured to the lower face of the diaphragm. The upper ends'of the springs 33are positioned against one face of the member IIT.

A shaft '58 supports the lever 38 for rotation.Y Bearings B9, i9 are provided for the shaft and they may be attached to or formed integrallywith ears 5B which are joined by a portion 5I. The portion 5I is held in place by a nut and bolt52v.

Perforated enlargements 53 are for-med on the housing section 2 to receive which the two housing sections` are removably joined together. As shown in Figure 1, the points of the hooks 54, engage the shoulder 3 on the housing section I. The hooks are in theiormfof bolts and carry nuts 55. Between the enlargements 53 are positioned springs 56, which are compressed to the desired degree bythe nuts when they are tightened.

Although I have shown an operative'orm or my invention, it will berecognized that many changes in the form, shapevand arrangement oi parts can be made without departing from the f spirit of the invention, and my showing is therefore to be taken as, in a sense, diagrammatic.

The use and operation as follows:

The pump is assembled asshovvn and isposif.y Ordinarily if the pump isv tioned upon a support. used in connection with an internal combustion engine, it will be mounted on the crankcase or some other part of the engine and the push rod 4I will be actuated bythe engine, for example, by the cam shaft, or otherwise. The intake pase. sage B is connected with a source of fuel and the outlet or discharge passage Ilr is connected to the carburetor or other device to which the fuel is to be delivered. When the member 4I is reciprocated, the member 38 is movedup and down-and alternately depresses the diaphragm SIIl against the resistance of the spring crV springs 33. springs return the diaphragm when free to do so.

When the diaphragm is depressed, suction is created within the housing above the diaphragm and the valve I4 is moved from the position shown in Figure 2. It is thus moved out of contact with the member I3 and into contact with the top of the'member I1. Fuel is drawn through the pas' it a cushioningv A push rod 4I, reciprocatedfrom-` the nuts and of this invention are,

The

, This cycle of operations continues as assembly.,

the member mangime. parts is simplified sage 6, the chamber 5, through the openings I 8 and into the diaphragm pumping chamber. When the diaphragm movement is reversed so that pressure is created within the housing, the valve I4 is again seated.

When pressure rises sufciently, the valve ring 24 is raised against the resistance of the spring 25 L and liquidpasses through the valuel openings 23vand through the passage 8 and moves thence through the discharge passage 9 and the conduit which may be connected to it at the point of use. long as the lever 38 is moved.

In assembling,` pumps of the type indicated, it is important that the assembly be carried out correctly, and it is `important to design a pump inV which the various parts may be assembled with a minimum of eil'ort. In the structure of the present design the valve seating arrangements are designed so that one valve seat serves the additional; purpose 0i properlypositioningand centering lanother valve seat and. also. Ot Securing.

it inplae.

In the assemblyof the uppervportionlof the therefore, the housing member I with,

its associated-fixed parts is completed-and the assembly may then beearned` out as follows: '1 -he seat member I2 is put in placeandit is preferably held in place by a forced t.- Thexvalve lgfisthen put in place and the spring l5 is inserted,. The spring-2lil` is inserted-andy` the valve. ring 2liv is placedupon it. The valve seat member 2.4;. which` has the discharge openings in, placeywith onwithout a gasket ?.-'I and -nally serves to hold all of the previously mentioned valve lparts inproperasse so proportioned that when home into the, position` shown inFigure 2J it positions all oi the othermembers and, in--particula r, holds the valvefseat member 2| in position.'` Thus no added fasteningv means for thev valve seat member 2l is necessary,4 and an accurate assemblyis made certain and the operation of assem- I over the `operaticyn, requiredpreviously where each valve-seat member required separate assembly andvse-parate securingmeans.

I claim:

l. In combination .in a pump,

ing *I nember,` parts of said member-wiping inlet.

and outlet passages, an outlet valve seat membery providedwith a plurality oioutlet openings, an

outlet. valve. member positioned to. close said,

openings, an inlet valve., a seat thereoryand a second inlet `valve, sea formed insaid secondseat, said second inlet valve seat being adapted tov be secured to said housing member and having a portion engaging a portion oi"` said outlet valve seat member and-holding'- the same in position.l

2.- Invcombination in. d ing member, parts v and outlet passages, an annular outlet valve seat member provided with a plurality ings, an annular outlet valve memberp osit1oned to close said openings, an inlet valve, a seat there-V for, andasecond inlet valve seat, inlet openings beingrormed in said second seat, second inlet valve seat'being adapted to said-housing member and having a portion engaging a portion of* said outlet valve seat member andholding the same in position.

3. In combination in a pump housing, a

pump housing, a hous-Y holds-f ingfmember, parts of said member deirlirzginlet-Y 23 formed-init. iscnut II is put intol place.- This memberbled position.A It 'is'v it has been screwed` t, inlet Openings, beinaoi said member defining inlet:`

be. secured to.

2,500,810 6 and outlet passages, an outlet valve seat memcluding means adapted to engage said annular ber provided with a plurality of outlet openings, seat to position and to retain said annular seat an outlet valve member positioned to close said in predetermined position. openings, and a spring biased to move said valve 8. In combination in a pump, a housing memto the closed position, an inlet valve, a seat there- 5 bei defining a central inlet passage and an anadapted to be secured to said housing member l0 seat member to close said outlet openings, an

outlet Valve seat member and holding the same inlet valve adapted to seat on said inlet valve in position. seat to close said inlet passage, a valve retaining 4. In combination in a pump housing, a housmember projecting through said central opening ings, an annular outlet valve member positioned for securing said valve retaining member to said to close said openings, and a spring biased to housing member.

move said valve to the closed position, an inlet 9. In combination in a pump, a housing, said Valve, a seat therefor, and a second inlet valve housing defining an inlet and an outlet passage,

valve seat being adapted to be secured to said ture, another 0i said valve seat members extenda portion of said outlet valve seat member and an interlocking engagement with said housing, holding the same in position. said other of said valve seat members including 5. In combination in a pump housing, a housmeans adapted to engage said one of said valve seat, inlet openings being formed in Said second Seat member foi each of said valves one of said seat, said second inlet valve seat being adapted ValVG Seat members havlng a Cenlil aperture, to be secuied to said housing member and haval1101315161 0f Sald VaVe Seat members eXtendns ing a portion engaging a portlon of sald outlet hIOllgh Sld Central aperture and hvllg an valve seat member and holding the same in p0- 40 interlocking engagement with said housing, said sii-,ion other of said valve seat members including means 6, In Combination in a, pump housing, a nousadapted to engage said one of said valve seat an annular Outlet Valve Seat member provided bers in proper position, said Valves being posiwith a plurality of outlet openings, an annular tonecl one to be seated on each of said Valve seat outlet valve member positioned to close said members openings, and a spring biased to move said valve CHARLES A. ERICKSON.

for, and a second inlet Valve seat, inlet openings REFERENCES CITED being formed in said second seat, and a spring The following references are of record in the biased to hold said inlet valve on said rst inlet file of this patent:

valve seat, said second inlet Valve seat being ED T ENT adapted to be secured to said housing member UNIT S ATES PAT s and having a portion engaging a portion of said Number Name Date inlet valve, a seat therefor, an outlet Valve and 2,269,625 Erlckson Jan- 13: 1942 an annular seat therefor, said inlet Valve seat being adapted to project through the central FOREIGN PATENTS opening of said annular seat and be secured to Number Country Date said housing member, said inlet valve seat n- 31,505 France Mar. 16, 1927 

